• 文献标题:   Wess-Zumino-Witten Terms in Graphene Landau Levels
  • 文献类型:   Article
  • 作  者:   LEE J, SACHDEV S
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:   Harvard Univ
  • 被引频次:   9
  • DOI:   10.1103/PhysRevLett.114.226801
  • 出版年:   2015

▎ 摘  要

We consider the interplay between the antiferromagnetic and Kekule valence bond solid orderings in the zero energy Landau levels of neutral monolayer and bilayer graphene. We establish the presence of Wess-Zumino-Witten terms between these orders: this implies that their quantum fluctuations are described by the deconfined critical theories of quantum spin systems. We present implications for experiments, including the possible presence of excitonic superfluidity in bilayer graphene.